What is the measuring unit for electrical resistance?

The measuring unit for electrical resistance is the Ohm. This unit is named after Georg Simon Ohm, a German physicist who contributed significantly to the understanding of electrical circuits. In electrical terms, resistance is defined as the opposition to the flow of electric current in a conductor. It is quantified using Ohm's law, which states that the current through a conductor between two points is directly proportional to the voltage across the two points and inversely proportional to the resistance.

When resistance is measured, it helps in determining how much energy is lost as heat when an electric current flows through a material. Understanding resistance is crucial for designing circuits that function effectively. The core relationship can be summed up in the formula: Voltage (V) = Current (I) × Resistance (R).

Other choices, such as Volt, Ampere, and Watt, refer to other electrical parameters. Volt measures electrical potential, Ampere measures the flow of electric current, and Watt measures electric power, which is the rate at which electrical energy is transferred. Each of these units plays a distinct role in the field of electrical applications but does not define resistance itself. Therefore, Ohm is clearly identified as the correct unit of measurement for electrical resistance.